钢筋混凝土桥墩开裂刚度计算
|
摘要
以基本的力学理论为依据,对双筋矩形截面混凝土墩柱的受力模式进行简化,通过力学平衡方程,从理论上分析了墩柱受力过程中开裂区域的刚度。在此基础上,引入了三段式的概念,并通过三段式思想推算出截面刚度的简化公式。根据简化公式计算出力-位移曲线,继而推算出混凝土墩柱整体刚度。
According to the theory of the fundamental mechanics,this paper simplifies the mechanical mode of the bi-bar reinforced rectangular concrete bridge pier,and through the mechanical balance equation,conducts the theoretical analysis of cracking stiffness of the pier during the stress process.On this basis,by introducing the concept "three-stage",a simplified formula used to calculate stiffness of cross section was derived.In term of the simplified formula force-displacement curve and the stiffness of whole concrete pier were calculated.
According to the theory of the fundamental mechanics,this paper simplifies the mechanical mode of the bi-bar reinforced rectangular concrete bridge pier,and through the mechanical balance equation,conducts the theoretical analysis of cracking stiffness of the pier during the stress process.On this basis,by introducing the concept "three-stage",a simplified formula used to calculate stiffness of cross section was derived.In term of the simplified formula force-displacement curve and the stiffness of whole concrete pier were calculated.
引文
[1]AASHTO LRFD.Bridge design specifications,american association of state highway and transportation officials[M].SI Unite Second Edition,1998.
[2]苗宇.钢筋混凝土矩形桥墩开裂刚度理论初探[D].重庆:重庆交通大学,2009.MIAO Yu.Preliminarily exploration the theories of post cracking stiffness of rectangular reinforced concrete Pier[D].Chongqing:Chongqing Jiao-tong University,2009.
[3]李国豪.桥梁结构稳定与振动[M].北京:中国铁道出版社,2003.LI Guohao.Stability and vibration of bridge structures[M].Beijing:Printing shop of Railroad Publishing house of China,2003.
[4]郭磊,李建中,范立础.桥梁结构抗震设计中截面刚度的取值分析[J].同济大学学报,2004.GUO Lei,LI Jianzhong,FAN lichu.Analysis of section stiffness adopted in seismic design for bridge structures[J].Journal of Tongji University,2004.
[5]高波,郑罡,等.形心轴附加弯矩对墩柱整体受力的初步分析[J].世界地震工程.GAO Bo,ZHENG Gang.Primary analysis of the additional moment of center axis for the whole mechanics of column[J].World Earthquake Engi-neering.
[2]苗宇.钢筋混凝土矩形桥墩开裂刚度理论初探[D].重庆:重庆交通大学,2009.MIAO Yu.Preliminarily exploration the theories of post cracking stiffness of rectangular reinforced concrete Pier[D].Chongqing:Chongqing Jiao-tong University,2009.
[3]李国豪.桥梁结构稳定与振动[M].北京:中国铁道出版社,2003.LI Guohao.Stability and vibration of bridge structures[M].Beijing:Printing shop of Railroad Publishing house of China,2003.
[4]郭磊,李建中,范立础.桥梁结构抗震设计中截面刚度的取值分析[J].同济大学学报,2004.GUO Lei,LI Jianzhong,FAN lichu.Analysis of section stiffness adopted in seismic design for bridge structures[J].Journal of Tongji University,2004.
[5]高波,郑罡,等.形心轴附加弯矩对墩柱整体受力的初步分析[J].世界地震工程.GAO Bo,ZHENG Gang.Primary analysis of the additional moment of center axis for the whole mechanics of column[J].World Earthquake Engi-neering.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心